Wiska COMBI 607/5 Black Junction Box with Reducers
The Wiska COMBI 607/5 Black Junction Box with Reducers (10061779) is a robust, weather-resistant electrical enclosure designed for reliable cable connections in domestic, commercial and industrial installations. Measuring 110 x 110 x 66mm, this IP66/IP67 junction box comes complete with a 41A terminal block and two M25 to M20 reduction adaptors.
Manufactured from polypropylene with a flexible TPE sealing gasket, the COMBI 607/5 offers a practical solution for electrical connections where moisture, dust and demanding environmental conditions need to be considered.
Includes 2 x M25 to M20 Reduction Adaptors
A key advantage of this Wiska COMBI 607/5 Black Junction Box with Reducers is the inclusion of two Wiska KRM25/20 reduction adaptors.
The COMBI 607 enclosure features seven integrated M25 threaded entries but does not have dedicated M20 threaded entries. The two supplied reducers enable electricians to fit M20 threaded cable glands into the larger M25 entries without purchasing additional adaptors.
This is especially useful when working with smaller cable glands commonly used in UK electrical installations.
View Wiska KRM25/20 M25 to M20 Reduction Adaptor – Black
41A Terminal Block Included
The junction box is supplied with a Wiska SP-HKT 607 terminal block (part number 22000407), featuring five poles and terminals suitable for conductors up to 6mm². The terminal assembly has a rated current of 41A, providing a convenient connection point for suitable electrical circuits.
The terminal block is supplied as part of the complete enclosure, making this version suitable for installers who require a ready-equipped junction box rather than an empty enclosure.
View Wiska SP-HKT 607 Terminal Block – Manufacturer Information
IP66/IP67 Weather Protection
The Wiska COMBI 607/5 Black Junction Box with Reducers offers protection against dust and water ingress when installed using the appropriate cable entry system.
- IP66 protection: Achieved using the integrated self-sealing membrane cable entries with suitable cables.
- IP67 protection: Achieved using the threaded entries with compatible Wiska ESKV cable glands, as specified by the manufacturer.
The enclosure has seven elastic, self-sealing cable entry membranes on the sides and three additional membrane entries on the base. Seven integrated M25 threads allow compatible cable glands to be fitted without separate locknuts.
Key Features
- Wiska COMBI 607/5 black junction box, part number 10061779
- Includes 2 x Wiska KRM25/20 reduction adaptors
- Includes 1 x Wiska SP-HKT 607 terminal block
- 41A rated terminal current
- 5-pole terminal arrangement for conductors up to 6mm²
- IP66/IP67 protection, depending on cable entry arrangement
- Seven integrated M25 threaded entries
- Seven side and three base self-sealing membrane entries
- Four captive cover screws
- Four internal fixing openings outside the sealing area
- Durable polypropylene enclosure with TPE sealing gasket
- Black finish, RAL 9005
Technical Specifications
- Manufacturer: Wiska
- Manufacturer Part Number: 10061779
- Model: COMBI 607/5/2xKRM25/20 BK
- Product Type: Electrical Junction Box with Terminals and Reducers
- Colour: Black (RAL 9005)
- Dimensions: 110 x 110 x 66mm
- Protection Rating: IP66/IP67
- Rated Voltage: 690V
- Terminal Current Rating: 41A
- Terminal Block: Wiska SP-HKT 607 (22000407)
- Terminal Configuration: 5-pole, 6mm²
- Threaded Cable Entries: 7 x M25
- Membrane Entries: 7 side and 3 base
- Compatible Cable Diameter for IP66 Membrane Entry: 5.2–17mm
- Compatible Cable Diameter for IP67 ESKV Gland Entry: 9–17mm
- Enclosure Material: Polypropylene
- Sealing Gasket: TPE
- Enclosure Temperature Range: -30°C to +100°C
- Installation Temperature: -5°C to +60°C
- Glow Wire Test: 750°C
- Fixing: 4 internal openings
What’s Included?
- 1 x Wiska COMBI 607/5 Black Junction Box
- 1 x Wiska SP-HKT 607 5-Pole 41A Terminal Block
- 2 x Wiska KRM25/20 M25 to M20 Reduction Adaptors
Suitable Applications
This Wiska junction box is suitable for a wide range of indoor and outdoor electrical installations, including cable junctions, lighting connections, power distribution wiring and general-purpose electrical connections where an appropriately rated enclosure is required.
The combination of an included terminal block, integrated M25 entries and two M20 reduction adaptors makes it a practical option for electricians working with different cable gland sizes.


